Vaporizer



July 2, 1940- J. l.. BLooMHl-:ART 220522688 VAPORIZER Filed April 20, 1959 2 Sheets-Sheei l was July 2, 1940. J. l.. BLooMHEART VAPORIZER Filed April 20, 1959 2 Sheets-Sheet 2 gbl/umm w A @ma Patented July 2, 1940 VAPORIZER vJohn L. Bloomheart, Toledo, Ohio,` assignor vto `Martha F. McKesson, Toledo, Ohio Applicatie `April 20, 1939, serial No.` 268,997

3 Claims.

: `This invention relates to gas administration,

especially for analgesia andanaesthesia.

Thisinvention has utility in selective control .for vaporizing as ether.`

Referring to the drawings:

Fig; 1 is a` fragmentary View, partially diahgrammatic and inplan as to the ether cupi or vaporizer;

Fig...2 is asefction1 on the line `II---IL Fig. l, I"showings theivaporizer and valve device of the yheadxin` open positionfor` ether entrained gas supply Ito a patient;

Fig.13 is an enlargeddetail view of thehead on ftheI line IIL-HLFig. 1, showing the valve conf` @trol in thehead fully closed;

Fig. 4i is lasection on theline IV-IV, Fig. 2,

:showingthel'concentric grouping in the con- `tainer` fof a foraminous wall of `the vaporizer `concentricwith thehead;

VS isva view-of the head..from` the left fof Fig. 6 is a section on the line Vl--VL Fig. `5, showing features-of fthe: .head and control Fig. '7 is a section on the line VII-VII, Fig. 5, showing the intermediate chamber of the head `and its delivery iiow from the upper side of the intermediate valve seat;

Fig. 8 is a section on the line VIII-VIII, Fig. 5, showing the port arrangement in the head for the supply :How to the under side of the intermediate Valve seat;

Fig. 9 is a section on` the line IX-IX, Fig. 3, showing features of the relief Valve control; and

Fig. 10 is a section on the line X-X, Fig. 6, showing the filling or pouring plug connection.

Source of anaesthesia or analgesia gases may be either nitrousoxid, oxygen, carbon dioXid, or various combinations thereof through means of gas administering apparatus such as shown in United States Letters Patent No. 2,144,479 of January 17, 1939.

From such machine I, by duct connection 2,

` there may be absorber 3 to contribute to eiciency in taking exhaled gas from duct 4 and removing carbon dioxid therefrom instead of duct 2 passing directly by way 5 to fitting 5. This exhalation duct 4 may be from mask l, to which supply duct 8 extends from tting 9 opposite the fitting 6. Between these fittings 6, 9, in the` instance it be vdesired to supplement a gas administration with other agent asether, head Il) is introduced. Concentrically through this head I0 is intermediate port I I provided with seat I2 inring I3. Communication from supply gas fitting E may be by way of passage I4 through `this port I I to passage (o1. 12s- 186) l l .m f

I5 in communication with the` duct `6 through d" fitting 9, when closure member I t is; unseated as to seat I2. This closuregmember Iiiis mounted bythreadedmember II on stem I8 carrying supplemental closure member I9 as this stem.` i8 is mounted `in primary stem portion l having thread `assernblyll lwithnut 22 anchored 'by set screw 23 with control cap 24. Set screw tserves `as a" stop: limiting `the travel distance forthis stem member 20 as to the nut `member 22.

26 abuts helical compression'spring Z7 as against closure 28` `for thehead ill. `There` is thus -`a holding `of this `cap 24 `against casual shifting. Assurance is' had that rotation of this cap 24 may effect longitudinal travel `of the closure vmem 1 bers I6, I9.

To this end, `fixed with the stem member 29 `by pins 29 is `forked terminus arm Sii engaging pin 3l. Accordingly, as the cap 2li isrotated, the stem sections I`I`, I8, 20, are heldagainst suchrotation and the closure member It is moved toward `o-r 'from the seat I2. In moving from the seat: I 2, thisolosuremember I5 as `provided-with compressible face 32, engages seat-330i `ring-3d, and thereby closes port` 35 in communication with central chamber 39 surrounded by foraminous tubular wall 31 in receiver 38. This wall 31 may be of fabric wicking or material susceptible to capillary attraction for the ether so that, as the ether is drawn up thereby, gasl flow from the Disk chamber 36 through the wall 3l to chamber section 38 may be impregnated with thevapor and rise through Icy-pass passage 39. This foraminous wall vaporizer holder for the foraminous` partition 31 is mounted by fitting `lil concentric with the ports in the valve controldevice as well` as concentric with the receiver or reservoir 38.

These vapors, rising through bly-pass S9 to cham ber 4I with closure member i9 lifted, may pass through port 42 `atvalve seat i3 and thus enter the passage I5. The'postion of the closure IIS which opens the Valve port 35 closes the under 2 side of the valve port II. There is accordingly herein straightaway action in this common control device from the cap 24 for fully or partially opening the way tothe vaporizer as a by-pass for the flow between the ttings 6 and 9.

Fixed with the head I0 `by screw d5 (Fig. 1) is pointer or indicator 46. The capk 2i carries graduations 4'1 which, as shiita'ble With the head 24 as to this pointer or marker |26, indicate the extent of opening `or closing as eiiected by the position of the closures It,` I9.

The closure I9 has, `on its under side, a compressble face to enlfrom increase in temperature and other pressure increasing factors. To such end, at o i position 18 (Fig. l) as at the indicator 45, cam i9 (Fig. 9) is in position to act on ball 5G against compression spring 5l and thereby open way through duct 52 from the chamber 33 for pressure escape through port 53 under iiange 5t of the cap 24, clear of the closure 23. This provision is such not necessarily to deplete the charge of ether in the ether cup or vaporizer but is a safeguard to avoid building up of pressure therein.

Also this position 48 is appropriate for. charging the container for lL Accordingly, from the by-pass 39 there is mounted at port '55 (Figs. 3,10) fitting 56 having funnel 51 and closure plug 58 which may be removed for permitting a charge of the desired number of drops or quantity of ether and the closure 58 reset. f

In the operation hereunder, this ether cup or vaporizer placed between the gas administering machine and the mask permits ready impregnationA of the administered gas with a vaporizable substance as ether or a by-passing through this device independently of vaporization. -This use independently of the vaporization is with the closure 'I6 at the port 32 and the closure i9 at the port 42. The showing in Fig. 1 is at fully open position. Accordingly, such corresponds to the showing in Fig. 2, lwhich means full use of the vaporizer instead of by-passing the vaporizer. In positioningfthe cap 24 for positions intermediate the'fully open position (Fig. y1) and the oi or iill positions remote therefrom, the closures I6, i9, are in the adjusted positions'to effect mixing of the ether in the desired proportion between the fully cutting ofi" and fully on positions therefor. w

be positively acted upon by the control device at non-delivery position for the closure means as to the reservoir. f

2. A vaporizer valve head having a central way from a vaporizer port to a chamber, there being three coaxial seats in succession along said way, and la passage along side of said way through the` head froma second vaporizer port adjacent said rst vaporizer port to said chamber, there being a port on one side of the intermediate seat and another port on the other side of the intermediate seat, a single valve stem, valve-closure means on the stem spaced to cooperate in one direction of shifting by the stem to close both terminal seats, said stem mounting one of said closure means for cooperating with the intermediate seat. v

3. A vaporizer valve head having a central way from a vaporizer port to achambenthere being three coaxial seats in succession along said way, and a passage along side of saidway through the head from a second vaporizer port adjacent said first vaporizer port to said chamber, there being a port on one side of the intermediate seat and another port on the other side of the intermediate seat, a single valve stem, and three valve disks on the stemfspaced to cooperate two at a time with said valve seats, with said passage providing communication in the head between the sides of the terminal seats away from the intermediate seat.

' JOI-IN L. BLOOMHEART. 

